Car-haul.



(No Model.)

F. V. HETZEL.

CAR HAUL.

ppnmmn. am ny s, 1901.)

:Inns co. momu'mn.. wmmnsron. uA n Patented luly 9, 190|.'

2 Shoah-Sheet l.

No. 678,254. Patented July 9, |901. F. v. HETzEL.

GAR HAUL.

(Applicatipn led Hay d, 1901.) (l0 MOGBL) 2 Sheets-Sheet 2` UNITED n STATESr U PATENT EEICE.

FREI-)ERIC v. I-IETZEL, oEPI-IILADELPHIA, PENNSYLVANIA, AssiGNoR To THE LINK BELT ENGINEERING COMPANY, 0E SAME PLACE.

CAR-HAU L.

srEoIEIcaEIoN forming part df Letters :Patent No. 678,254, dated Juy 9, 1961'.

Application filed May 6 1901. Serial No. 5 8 ,972. (No model.)

T0 LZZ whom it may concern.-

Be it known that I, FREDERIC V. HETZEI., a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Car-Hauls, of which the following is a specication.

The object of my invention is to improve the construction of safety mechanism for the chain of the uphaul which will hold the chain when the power is shut off and, further, Will hold the chain if either the head-shaft or the head-wheel should break or the chain slide oi the head-wheel or in the event of the chain breaking at or near the head-wheel.

In the accompanying drawings, Figure l is a longitudinal sectional view of sufficient of a car-haul to illustrate my invention. Fig. 2 is a plan view of Fig. 1. Figs. 3 and 4 are perspective views of the two pawls which I use, and Fig. 5 is al perspective view of one form of uphaul-chain.

Car-hauls are used for the purpose of elevating cars containing coal or other material from a low level to a high level for the purpose of loading bins or pockets or discharging coal or other material into chutes from which cars or boats can be loaded. They are used particularly in hauling mine-cars from mines to a chute or tipple from which railroad-cars are loaded.

It has been the common practice to hold the uphaul-chain of a car-haul when the power is shut oii by means of a pawl and ratchet-wheel on the head-shaft; but this construction is objectionable for the reason that should any part of the mechanism break, such as the head-shaft or head-wheel or the chain at or near the head-wheel, or the chain slip off the head-wheelthis mechanism would not hold the chain and the cars on the inclined plane. By my invention, however, the chain will be held when the power is shut 0E or in the event of an accident, as described above.

A is the inclined plane, having suitable rails a a for the cars, which extend over the coalchutes in the ordinary manner. Between the rails travels the uphaul-chain B, which is in the present instance of the construction shown in Fig. 5.

D is the head-wheel shaft, on which is the head-wheel D', driven in the present instance by a gear-wheel d, meshing with the pinion e on the intermediate shaft E, having on it a gear-wheel e', meshing with the pinion f on the driven shaftF, driven by the belt or other means from the engine.

I I' are two pawl-levers pivoted to the frame A at z' i', respectively. The pawl I has a single hook 2, which is arranged to pass between the two spaced links of the chain B and engage the inside links, while the hook 113 of the .pawl-lever I is a double hook, as shown in Fig. 4, and the two prongs of the hook pass on the outside of the chain and engage the outside links. The pawls are so spaced that while one is in engagement the other is passing from one link to another, so that one pawl is always in engagement with the uphaul-chain, and in the event of any accident happening at the head-wheel the chain would be held by one or other of the pawls.

Each ot' the pawl-levers I I have suitable Weights j j', respectively, which can be adj usted on the lever to any point desired, so as to throw the hooked arms of the levers up into engagement with the chain. The form of the pawls may be varied according to circumstances. While I prefer a hooked pawl of the type shown, such a pawl is not absolutely necessary.

The cars are hauled up the incline to the platform A by the projecting lugs b of the chain, where they are freed and run away from the lug b onto the tracks over the bins or coal-chutes in the present instance and the chain passes around the head-wheel and returns. As each link passes the pawl the pawl is pushed down and drops back of the pin, and this motion is kept up continuously while the chain is running, so that the moment the power is shut of and the headwheel stops onel or other of the pawls holds the chain, preventing it from slipping due to the weight of the cars being hauled up the incline, and in the event of the parts breaking at the head-wheel the chainsand the oars will be held by the pawls, preventing the cars dashing down the incline.

I claim as my-invention- 1. The combination in a car-haul, of the inclined plane, the tracks, the uphaul-chain for carrying the cars upl the incline, a head Sov wheel for driving said chain, with a pawl situated below the head-wheel and arranged to engage the chain, substantially as described.

2. The combination of an inclined plane, tracks thereon, an uphanl-chain, a driving head-wheel around which the chain passes, two pawls below the head-wheel, one pawi being so setin respect to the other that while the end of one pawi is in engagement with the chain the end of the other pawl is out of engagement therewith, substantially as described.

3. The combination in a car-haul,- of the inclined plane, tracks thereon, an nphanichain made of a series of links and having hooks engaging the cars to be hauled, a headwheel around which the chain passes and by which the chain is driven, two pawls on the inclined portion of the structure some distance from the head-wheel, each pa wl having a hooked arm and a weighted arm, the pawis being so set in respect to the chain that one pawl will be in engagement with the chain while the other pawl will be free thereof, substantially as described.

4. The combination in a car-haul, of an inclined plane, tracks thereon, a chain, a head- Wheel for driving said chain, two pawls, one having a single arm engaging the chain, the other having a double arm engaging the chain, the two pawls being so set in respect to the chain that when oneis in engagement the other is free, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERIC V. IIETZEL.

Witnesses:

WILL. A., BARR, J os. H. KLEIN. 

